J 42 - BOTANY. this species, I can recognize var. hispida, Gray, which is best marked, with its leaves lanceolate and acute, or spatulate, oblong and obtuse, from |-1' long; plant hispid, with short, stiffish, and more or less dense hairs. (555, 464, from Colorado, 792 from Arizona, and an unnumbered one coUected by Loew in New Mexico; var. foliosa, Watson, more leafy, with leaves obovate- spatulate, 1' long, and more or less canescent, running into C. canescens, T. & G. (791, 182, from Arizona, and 552 from Colorado). Canescent form (724) from Southern Arizona is well marked.) Var. RuTTEEi.—Stem erect, densely leafy; leaves 1-1 J' long, lanceolate, acute, densely covered with long, white, sUky hairs; leaves graduaUy reduced to bracts under the involucre; ray-flowers f long, 1-1 J" wide.—Sanoita VaUey, Arizona (662). This may be reduced to 0. villosa var. canescens, which is apparently its nearest ally, yet it is quite different from any speci¬ mens of the latter that I have in my collection. Aplopappus* Maceonema, Gray (Proc. Amer. Acad. 6, p. 542).—Twin Lakes, Colorado, 9-10,000 feet altitude (451). "Aplopappus ceevinus, Watson (Amer. Naturalist, 7, p. 301).—Low (6 inches high), suffruticose, resinous-scabrous, the short herbaceous stems leafy to the top; leaves oblong-lanceolate, 4-6" long, shortly cuspidate, attenuate to the base, entire, sub-scabrous, 3-nerved; heads 3-4" long, in corymbs of 3-5, terminating the branches; outer involucral scales linear, acuminate, with setaceous, spreading tips, the inner chartaceous, acutish, with scarious, lacerated margins, erect, nearly equalling the pappus; rays few, narrow, and but little exceeding the disk; style exserted; achenia linear, pubescent.—^Nearest to A. suffruticosus, Gray, Antelope Canon.'' Utah.—^Watson, I. c.—Plate VI. 1. Branch, natural size 2. Inner invo¬ lucral scale. 3. Outer involucral scale. 4. Disk-flower. 5. Style and stigma. 6. Anther. All except the branch enlarged. Aplopappus Feemontii, Gray (Jour. Bost. Nat. Hist. Soc. v, 5).— Glabrous, 1° high; corymbosely branched above, with the leafy branches * Aplopappus, Cass.—Heads several- to many-flowered, heterogamous with fertile rays, or homo- gamous and destitute of rays. Involucre imbricated,in 2-Beveral rows; scales with mostly acute and often somewhat spreading tips. Eeceptacle flat or nearly so, foveolate or alveolate. Appendages of the style usually elongated-subulate. Achenia variable in shape. Pappus simple, of copious, unequal, rigid, capillary bristles, which .-ire more or less rough.—Herbs or under-shrubs, with yellow flowers, and pappus tawny or reddish, not often white.—(After Gray, Fl. Cal. vol. 1, p. 310.)